Doebner reaction and the other technique used was Claisen-Schmidt reaction. Therefore the aim of this experiment is to synthesize trans p-methoxycinnamic acid and to synthesize dibenzalacetone via an aldol condensation reaction between acetone and benzaldehyde. The products would be recrystallized using ethanol‚ then characterized using melting point analysis. Introduction: In this experiment we learnt on carbonyl compounds‚ enols and enolates. We also learnt two different techniques to test the
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Benzene 1 Benzene Benzene Identifiers [1] CAS number 71-43-2 PubChem 241 ChemSpider 236 UNII J64922108F EC number 200-753-7 KEGG C01407 ChEBI CHEBI:16716 ChEMBL CHEMBL277500 RTECS number CY1400000 Jmol-3D images Image 1 [2] [3] [4] [5] [6] [7] [8] [9] Properties Molecular formula CH Molar mass 78.11 g mol−1 Appearance Colorless liquid Odor aromatic‚ gasoline-like
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Laboratory #6 Qualitative Tests for Carbonyls: Aldehydes vs. Ketones Introduction Various chemical tests identifying ketones and aldehydes are used in this experiment in order to identify an unknown carbonyl compound. The tests used are: 2‚4-dinitrophenylhydrazone test‚ Tollen’s Test‚ Benedict’s Test‚ Chromic Acid Test‚ aka Bordwell-Wellman Test‚ Schiff’s Test‚ and Iodoform Test. These classification tests provide results based on color change or formation of precipitation‚ which is then used
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Wittig Reaction and Photoisomerization Abstract: For this laboratory experiment stilbene was produced through a Wittig reaction with benzyltriphenyl phosphonium and benzaldehyde producing a form of stilbene (Figure 1). This reaction favored a crude Z-Stilbene crystal product over its E counterpart. When Z-Stilbene underwent photoisomerization with iodine for 1 hour it reconfigured almost exclusively into its more stable counterpart E-Stilbene. The reaction produced very low yield of 6.3% due
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detail‚ including the regiochemistry). The initial porphyrinogen product is not fully aromatic‚ but oxidation from atmospheric oxygen in the presence of the Lewis acid silica gel allows formation of the fully conjugated porphyrin product. Using benzaldehyde as the electrophile will result in a phenyl substituent on each carbon that links the pyrrole units. The porphyrins synthesized in this experiment will not be bound to metals. Several features of this synthesis are worthy of comment. A
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PHARMACOGNOSY REVIEWER In pharmacognosy‚ drugs may be classified based on morphology‚ chemical constituents and therapeutic applications (NOT price in the market) Factors that influence secondary constituent: heredity‚ ontogeny‚ environment Chromatography: process based on distribution of mixture between 2 phases General Information Discoverers/Scientists Joseph Caventou & Pelletier Quinine antimalarial Pierre Robiquet Codeine/Narcotine Philip Geiger & Rudolf Brandes Hyoscyamine and
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Abstract This experiment is about the synthesis of 3-nitrobenzaldehyde through nitration. The nitration of benzaldehyde is an example of an electrophilic aromatic substitution reaction‚ in which a proton of an aromatic ring is replaced by a nitro group. Many aromatic substitution reactions are known to occur when an aromatic substrate is allowed to react with a suitable electrophilic reagent‚ and many other groups besides nitro may be introduced into the ring. Although the reaction produced a low
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is very similar to the aldol condensation which is followed by elimination. In this reaction E and Z isomers of phenylcinnamic acid are created using benzaldehyde and acetic anhydride. The intermediate product is acetic phenyl acetic anhydride. Benzaldehyde is an aromatic compound that Results: The reaction involves the use of benzaldehyde with acetic anhydride which gave the phenylacetic acid which would be used with in the farther steps of the reaction to produce the E and Z phenylcinnamic
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Cancer Alternative Treatments The year 2008 was one of the most difficult one of my life emotionally. On March 4th 2008 my Grandpa died of pneumonia. This is the first time in my life that someone close to me had died. I was in 7th grade at the time. I remember how everyone in my family was saddened and in a sense shattered by this event. At first I was in complete shock for the longest time and in disbelief that he passed. We were supposed to celebrate his birthday four days later on March 8th
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making ability in carbonyl chemistry‚ Dibenzalacetone is synthesized from 2 equivalent of benzaldehyde and 1 equivalent of acetone in a base catalyzed reaction. Physical Data1: *detailed risk and safety phrases are attached. substance Hazards‚ risks and safety practices MW (g/mol) Amt. Used Mol. mp (K) bp (K) density(g/cm^3) acetone R11‚ R36‚ R67‚ S9‚ S25‚ S26 58.08 0.24 g 0.004 178.2 329.4 0.79 benzaldehyde R22‚ S24 106.13 0.82 g 0.008 247 451.1 1.0415 ehtyl acetate R11‚ R36‚ R66‚ R67‚ S16‚ S26
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